Low pressure gas burner



Nov. 21, 1933.

. J. s. FULLER 1,935,705

Low PRESSURE GAS BURNER origirm4 Filed sept. so, 1929 zsheets-sheet 1 N4 c B i fm2 JNVENTOR.

J olm i Fader A TTORN N0v.21,1933. f .SFULLER 1;.935,7os.

L'OW PRESSURE GAS :BURNER original Filed sept. so, 1929 zvsheet-s-Sheet2 FIG. 4

ha" 7 INVENTOR. f l d Jolm J. Faer ATTORNEY.

Patented Nov. 2l, 1933 PATIENT vor'rlca 1,935,705 Low lPREs'sUm; GASBURNER John s. Fuller, Tulsa, Okla.

Application September 30, 1929, 'Serial' No. 396,065. Renewed April 19,1933 5 claims. (Cl. 15s- 104) This invention relates to gas burners, andhas for an object the provision of a low pressure burner which is lightin weight; noiseless in operation; may be easily installed; is durablein construction, and of a relatively large capacity.

One of the principal objects of the invention is to provide a burnerwith eicient and economical means including a burning edge arrangementfor eliminating popping or backfeeding or lighting on the manifold whenthe' burner is turned low, the

means employed embodying a burner element of novel construction whichincludes a plurality of elongated narrow openings. These openings are ofa shape and capacity to insure a proper gas barrier and prevent theflamefrom passing through these openings into the burner body.

Another object of the invention is the provision of a burner in whichthe various parts may be renewed when desired, the manner of' assemblingthe burner being such that it may be readily taken apart andreassembled.

Another object is to provide a burner having composite sections, any oneof which might be disabled without interfering with the function ofthecomposite section adjacent to it.

Another object of the invention is the provision of a burner which isconstructed so that a number of burner units may be connected andinstalled to provide a burner of any desired capacity.

With the above and other objects in view, the invention furtherincludesv the following novel features and details of construction, tobe hereinafter more fully described, illustrated in the accompanyingdrawings and pointed outin the appended claims.

In the drawings;

Fig. 1 is a plan View showing four burner units.

Fig. 2 is a side view of Fig. l, taken along the line II-II in Fig. 1. y

Fig. 3 is a bottom view of Fig. 1.

Fig. 4 is a view taken along line IV--IV in Fig. 1. l

Fig. 5 is an enlarged detail view taken along Vune v-v in Fig. 2.

Fig. 6 is a view showing a number of different shaped disks which may beused in the construction of the burner element.

Fig. 7 is an edge view of the disks.

Referring to the drawings in detail wherein like charactersA ofreference denote corresponding parts, the burner is shown in Figs. 1 and2 arranged in connected units, these units being indicated at A. Eachunit comprises aburner proper B which is positioned between flre bricksor other fire resisting element C,-the opposite ends of the burners andnre bricks resting upon the anges of T beams D, and angle irons E.

Each burner B includes a hollow body 10 which is provided with divisions11, forming compartments 12. On the opposite sides of member 10, aretransverse rib like membersv 10x, and depending from each' of thecompartments 12 is a Venturi tube 13, which is integral with the mernber10 and these tubes 13 are joined together at 55 the bottom portion asshown in Fig. 2.

Arranged beneath the depending portion 13 of the body 10 is a gas header14 through which gas is supplied to the burner and where more than oneburner unit A is employed, the headers 14 '50 are connected by a pipeA15 while gas may be supplied to the headers through a pipe 16 from anysuitable source. I

. The Venturi tubes 13 and compartments 12 define a mixing chamber, airbeing admitted to this chamber through the open bottom of tubes 13 whilegas is supplied through nipples 17 which extend from the header 14. Themixing chamber is divided into aplurality of Venturi. passages 18 whichinclude relatively wide entrances 19, andA restricted throats 20 andflared outlet ends 21, each of the latter communicating with its chamber12 in the interior of the hollow body 10. The burner must, have a largevolume of primary air mixed with the gas. In order to 85 secure this Iemploy Venturi tubes of 'careful design. These Venturi passages thusserve to admit a quantity of gas and air, the same' being mixed andslightly compressed in its passage through the throat 20 and expandinginto a distributing 90 chamber 12 located within the hollow body 10.

" My burner thus has a very explosive mixture withinA its tubes.

Located within the top of the mixing chamber is a burner element 23.This element includes a 9 rod 24 Whose opposite ends `are receivedwithin holes provided in the end walls of the distribut.- ing chamber.Mounted upon this rod arel rectangular plates 26 which are spaced apartby relatively small disks 27. The rectangular plates 26 are arrangedtransversely ofthe top of the distributing chamber and are'of a. widthto have their edges contactwith the opposite sides of this chamber sothat relatively narrow elongated burner openings 28 are provided. Theseplates 26 are provided with notches 26x to receive the ribs 10a: whichact as a stabilizing feature of plates 26. The openings 28 extendtransversely of the distributing chamber. upon opposite sides of thelongitudinal center of the Iatterand the washer 27 and the paired ribs10x. Since the 4passage widens again higher up, the velocity decreasesand the flame does not blow off the top or roar. My plates are notfastened at their ends and can shift and expand horizontally between theribs 10x. The ribs 10:1: and vertical ribs 32 reinforce the box andprevent warping.

The space 28 should be varied for different gases and in my improvedburner this is accomplished by employing washers 27 of varied thickness.lThis opportunity of adjustment in assemblage is of great importance. l

Extending laterally from the Venturi tubes are portions 29, providedwith' a hole to receive a bolt 30, said bolt extending into the ends ofthe gas header 14, thereby rigidly attaching the gas header 14, to theVenturi tubes 13 and centering the gas jets 17 with the throats 20 ofthe Venturi tubes 13. f,

As previously stated, a mixture of air and gas enters the distributingchamber 12 through the Venturi passages 18 and from there passes throughthe openings 28 between the plates 26, where combustion takes place.

Ribs 32 extend from opposite sides of the body 10 and contact with theadjacent walls of the firebrick or other iireproof members C and providesecondary air passages 33.

Various shapes and sizes of plates and disks may be utilized inconstructing the burner element, some of which are shown in Figs. 6 and7 of the drawings. As shown at a in Fig. 6, the disks may be circular,or they may be triangular as shown at b. Also, they may be elongated asshown at c and provided with spaced openings so that more than one rod24.may be used. The edges of the disks may be at and of varying widthsas shown in Fig. 7, or they may be concaved as shown at d in thisfigure.

The invention is susceptible of various changes in its form, proportionsand minor details of construction and the right is herein reserved tomake such changes as properly fall within the scopev of the appendedclaims. f

Having described the invention what is claimed 1. In a gas burner, aplurality of burner bodies spaced apart; each burner body being open atthe top and having divisions therein, defining fuel distributingchambers and a Venturi tube for each chamber, said- Venturi tubes beingopen at their bottoms, and having their tops communicating with theirrespective distributing chambers; a gas header for each burner bodybelow and rigidly afiixed to said Venturi tubes and arranged to supplygas for mixture with air entering said Venturi tubes, and a plurality ofgas jets in said gas header, each jet being located in the central axisof its respective Venturi tube; a burner element located within the topof the burner body above the chambers and having spaced openingstherein; spaced ribs on the exterior of the burner body; and meanssupporting adjacent burner bodies; and a fire resisting element alsosupported by said means, arranged intermediate and in contact with theribs of adjacent burner bodies.

2. In a gas burner as defined in claim 1; and auxiliary air passagesdefined by the side faces of said gas burner bodies, their ribs and theside vcontacting faces of the fire resisting element.

3. In a burner, a hollow burner body having divisions therein deningfuel distributing compartments, each compartment having a transverse ribelement on opposite sides thereof, a rod arranged intermediate saidribs, a plurality of rectangular plates at spaced intervals apartdefined by washers sleeved on said rod in an alternating series; saidplates being arranged transversely at the top of the distributingchamber,

- their opposite ends being notched to receive said transverse ribs as astabilizing means and for forming a pair of restricted passages onopposite sides of each washer and between adjacent plates;

a Venturi tube below each compartment in communication therewith at thebase thereof; a gas header supplied with nipples, one for each tube andcommunicating therewith.

4. In a burner as described in claim 3; characterized by the furtherfact that said burner body has a plurality of spaced vertical ribs onthe exterior thereof.

5. In a gas burner; a plurality'of burner bodies of the characterdefined in claim 3, spaced apart,

said means arranged intermediate and in contact with vertical ribs`onsaid burner bodies.

JOHN S. FULLER.

